EP2452015A1 - Procédé pour produire une cellulose microfibrillée - Google Patents

Procédé pour produire une cellulose microfibrillée

Info

Publication number
EP2452015A1
EP2452015A1 EP10796797A EP10796797A EP2452015A1 EP 2452015 A1 EP2452015 A1 EP 2452015A1 EP 10796797 A EP10796797 A EP 10796797A EP 10796797 A EP10796797 A EP 10796797A EP 2452015 A1 EP2452015 A1 EP 2452015A1
Authority
EP
European Patent Office
Prior art keywords
fibres
treatment
mechanical
enzyme
enzymatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10796797A
Other languages
German (de)
English (en)
Other versions
EP2452015B1 (fr
EP2452015A4 (fr
Inventor
Isto Heiskanen
Kaj Backfolk
Marianna VEHVILLÄINEN
Taina Kamppuri
Pertti Nousiainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stora Enso Oyj
Original Assignee
Stora Enso Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stora Enso Oyj filed Critical Stora Enso Oyj
Publication of EP2452015A1 publication Critical patent/EP2452015A1/fr
Publication of EP2452015A4 publication Critical patent/EP2452015A4/fr
Application granted granted Critical
Publication of EP2452015B1 publication Critical patent/EP2452015B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/20—Chemically or biochemically modified fibres

Definitions

  • the present invention relates to a process for producing microfibrillated cellulose by treating cellulosic fibres.
  • Cellulosic fibres are multi-component structures made from cellulose polymers, i.e. cellulose chains. Lignin, pentosans and other components known in art may also be present.
  • the cellulose chains in the fibres are attached to each other to form elementary fibrils.
  • Several elementary fibrils are bound to each other to form microfibrils and several microfibrils form aggregates.
  • the links between the cellulose chains, elementary- and microfibrils are hydrogen bonds.
  • Microfibrillated cellulose (MFC) also known as nanocellulose is a material made from wood cellulose fibres, where the individual microfibrils have been partly or totally detached from each other.
  • MFC is normally very thin ( ⁇ 20 nm) and the length is often between 100 nm to 1 ⁇ m.
  • MFC can be produced in a number of different ways. It is possible to mechanically treat cellulosic fibres so that microfibrils are formed. However, it is very energy consuming method to, for example, shred or refine the fibres and it is therefore not often used.
  • the production of nanocellulose or microfibrillated cellulose with bacteria is another option. In contrast to the above, this is a bio-synthetic process starting from another raw material than wood fibres. However, it is a very expensive process and time consuming. It is also possible to produce microfibrils from cellulose by the aid of different chemicals which will break or dissolve the fibres.
  • Another object of the present invention is to produce microfibrillated cellulose with high consistency.
  • the invention relates to a process for treating cellulosic fibres which process comprises pre-treatment of the fibres with an enzyme in a first enzymatic treatment followed by mechanical pre-treatment of the fibres in a first mechanical treatment. Thereafter, the fibres are treated with an enzyme in a second enzymatic treatment followed by a final mechanical treatment of the fibres in a second mechanical treatment to form microfibrillated cellulose. In this way it is possible to produce MFC in an improved and energy efficient way.
  • the activity of the enzyme during the first enzymatic treatment can be between 0,01-250 nkat/g, however the activity of the first enzymatic treatment is preferably low, preferably between 0,05-50 nkat/g and the activity of the enzyme during the second enzymatic treatment is preferably higher, preferably between 50-300 nkat/g.
  • the first mechanical treatment and the second mechanical treatment are preferably done by shredding or refining of the fibres.
  • the first mechanical treatment opens the fibre structure before the following treatment with the enzyme.
  • the second enzymatic treatment will be more effective and selective which also will improve the second mechanical treatment and thus also the production of MFC.
  • the cellulosic fibres are preferably fibres of kraft pulp. Detailed description
  • a first enzymatic treatment of cellulosic fibres followed by a first mechanical treatment can increase the cutting of the fibres but while the production of fines is kept low. It is preferred to keep the amount of fines at a minimum after the first mechanical treatment, since enzymes which will be added in the second enzymatic treatment first decomposes fines before they decompose the fibres. Consequently, a low amount of fines increases the efficiency of the second enzymatic treatment.
  • hemicellulose such as xylanase and mannanase
  • hemicellulose such as xylanase and mannanase
  • the same or different enzyme can be used in the two enzymatic treatments.
  • the enzyme is often an enzymatic preparation which can contain small parts of other enzymatic activities than the main enzyme of the preparation.
  • Enzyme is added to the fibres which are in the form of a slurry which has a concentration of approximately 4-5%.
  • the enzyme is added during stirring either in the beginning of the first and/or second treatment or during the entire reaction time.
  • the temperature used for the treatments with the enzyme may be between 30-85 0 C. However, the temperature depends on the enzyme used and the optimal working temperature for that specific enzyme as well as other parameters of the treatment, such as time and pH. If cellulase is used, the temperature during the treatment may be approximately 50 0 C.
  • the first and second enzymatic treatments may each last for 30 minutes-5 hours. The time needed depends on the cellulosic fibres which are treated and on the activity of the enzyme as well as the temperature of the treatment.
  • the enzymatic treatments can be terminated by either rising the temperature or the pH in order to denaturate the enzymes.
  • the pH during the treatment with the enzyme is preferably between 4-6.
  • the fibres are preferably shredded or refined in order to increase the specific surface area of the fibres and in this way facilitate and improve the effect of the second enzymatic treatment.
  • the shredding or refining may be done at a consistency between 2-40% by total weight. However, high consistency, preferably between 15-40%, or between 10-20% by total weight is often preferred. Low consistency, for example 2-6% by total weight or medium consistency, for example 10-20% of total weight can also be used.
  • the first mechanical treatment is preferably done at a consistency of between 15-40% by total weight. It has been shown that treating cellulosic fibres with a first enzymatic treatment with quite low enzymatic activity followed by mechanical treatment at high consistency may increase fibre cutting, i.e. fibres with reduced fibre length are produced, while the amount of fines is kept at a minimum compared to other mechanical treatments. If large amount of fines are present during an enzymatic treatment the enzymes will first decompose them and not the fibres which are the target for the
  • the first enzymatic and mechanical treatments will increase the efficiency of the second enzymatic treatment and thus also the efficiency of the second mechanical treatment and the
  • an enzyme is once again added to the fibres which are in the form of a slurry which has a concentration of approximately 4-5%.
  • the enzyme is added during stirring either in the beginning of the second enzymatic treatment or during the entire reaction time.
  • the second treatment with the enzyme increases the accessibility and the activity of the fibres and improves the following mechanical treatment to form MFC.
  • the fibres are thereafter mechanically treated in a second mechanical treatment in order to form microfibrillated cellulose.
  • the time and temperature during such treatment varies depending on the fibres treated as well as on the previous treatments and are controlled in order to receive fibres with the desired fibre length.
  • the second mechanical treatment may be done by a refiner, defibrator, beater, friction grinder, high shear fibrilator (such as cavitron rotor/stator system), disperger, homogenizator (such as micro fluidizer) or other known mechanical fibre treatment apparatus.
  • a refiner defibrator, beater, friction grinder, high shear fibrilator (such as cavitron rotor/stator system), disperger, homogenizator (such as micro fluidizer) or other known mechanical fibre treatment apparatus.
  • the consistency of the fibres during treatment in a micro fluidizer can not be too high.
  • exposing the fibres to high pressure in narrow capillary at high consistency will also result in high mechanical impact on the fibres and the
  • the consistency of the fibres during the mechanical treatment is preferably between 2-40% by total weight. It is preferred to have a high consistency during the second mechanical treatment, preferably between 15- 40% by total weight.
  • the produced MFC will thus also have high consistency, preferably above 15% by total weight or preferably between 15-40% by total weight or even more preferably between 15-25% by total weight. In this way it is possible to transport the MFC to the site of usage in a very concentrated form. If needed it is possible to add water or chemical in order for the produced MFC to swell and thus make sure that all microfibrils are separated in the water or chemical. Addition of water during the second mechanical treatment should be avoided since the MFC will swell and it might be difficult to remove the produced MFC from the refiner, shredder or other mechanical treatment apparatus.
  • polymers is to stabilize the fibrils.
  • the produced MFC has very good bonding properties, i.e. it bonds well to different material such as glass, aluminium, paper or wood.
  • the MFC can be used for the production of films.
  • Another advantage with the produced MFC is that it can be used as a priming agent between different materials such as bio-barrier and fibre based substrate.
  • Micro fibrillated cellulose is often also referred to as
  • Fibres that has been fibrillated and which have microfibrills on the surface and microfibrils that are separated and located in a water phase of a slurry are included in the definition MFC.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

L'invention porte sur un procédé pour traiter des fibres cellulosiques, lequel procédé comprend le prétraitement des fibres avec un enzyme dans un premier traitement enzymatique, suivi par un prétraitement mécanique des fibres dans un premier traitement mécanique, un second traitement enzymatique suivi par un second traitement mécanique des fibres afin de former une cellulose microfibrillée. De cette façon, il est possible de produire une cellulose microfibrillée d'une façon améliorée et avec un bon rendement en énergie.
EP10796797.8A 2009-07-07 2010-07-02 Procédé pour produire une cellulose microfibrillée Active EP2452015B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0950535A SE533509C2 (sv) 2009-07-07 2009-07-07 Metod för framställning av mikrofibrillär cellulosa
PCT/IB2010/053044 WO2011004301A1 (fr) 2009-07-07 2010-07-02 Procédé pour produire une cellulose microfibrillée

Publications (3)

Publication Number Publication Date
EP2452015A1 true EP2452015A1 (fr) 2012-05-16
EP2452015A4 EP2452015A4 (fr) 2013-11-20
EP2452015B1 EP2452015B1 (fr) 2016-09-07

Family

ID=43243904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10796797.8A Active EP2452015B1 (fr) 2009-07-07 2010-07-02 Procédé pour produire une cellulose microfibrillée

Country Status (14)

Country Link
US (1) US8647468B2 (fr)
EP (1) EP2452015B1 (fr)
JP (1) JP5656993B2 (fr)
KR (1) KR101721275B1 (fr)
CN (1) CN102472015B (fr)
AU (1) AU2010269913B2 (fr)
BR (1) BR112012000144B1 (fr)
CA (1) CA2767067C (fr)
CL (1) CL2012000039A1 (fr)
PL (1) PL2452015T3 (fr)
RU (1) RU2535685C2 (fr)
SE (1) SE533509C2 (fr)
WO (1) WO2011004301A1 (fr)
ZA (1) ZA201200328B (fr)

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DK2386683T3 (da) 2010-04-27 2014-06-23 Omya Int Ag Fremgangsmåde til fremstilling af gel-baserede kompositmaterialer
SE1050985A1 (sv) * 2010-09-22 2012-03-23 Stora Enso Oyj En pappers eller kartongprodukt och en process förtillverkning av en pappers eller en kartongprodukt
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EP2882899A2 (fr) 2011-11-14 2015-06-17 Kemira Oyj Composition renfermant de l'akd et fabrication de papier et de carton
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FI20135773L (fr) * 2013-07-16 2015-01-17 Stora Enso Oyj
WO2015017869A1 (fr) * 2013-08-01 2015-02-05 Novozymes A/S Procédé de conversion enzymatique d'une biomasse lignocellulosique
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FI126042B (en) 2014-03-31 2016-06-15 Upm Kymmene Corp Method for producing nanofibril cellulose and nanofibril cellulose product
FI127716B (en) * 2014-03-31 2018-12-31 Upm Kymmene Corp Method of manufacturing fibrillated cellulose
CA2965757A1 (fr) 2014-10-28 2016-05-06 Stora Enso Oyj Procede de fabrication de polysaccharide microfibrille
US9822285B2 (en) 2015-01-28 2017-11-21 Gpcp Ip Holdings Llc Glue-bonded multi-ply absorbent sheet
SE540016E (en) 2015-08-27 2021-03-16 Stora Enso Oyj Method and apparatus for producing microfibrillated cellulose fiber
EP3362508B1 (fr) 2015-10-14 2019-06-26 FiberLean Technologies Limited Matériau formable en feuille 3d
US10774476B2 (en) 2016-01-19 2020-09-15 Gpcp Ip Holdings Llc Absorbent sheet tail-sealed with nanofibrillated cellulose-containing tail-seal adhesives
CN109072551B (zh) 2016-04-05 2020-02-04 菲博林科技有限公司 纸和纸板产品
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
EP4056741A1 (fr) 2016-04-22 2022-09-14 FiberLean Technologies Limited Procédé de préparation d'une suspension aqueuse comprenant de la cellulose microfibrillée
CN105926339B (zh) * 2016-04-26 2020-03-20 天津科技大学 一种微纤化纤维素的制备及其成膜方法
FR3052791B1 (fr) * 2016-06-16 2018-06-01 Centre Technique De L'industrie, Des Papiers, Cartons Et Celluloses Procede de production de cellulose microfibrillee
CN106368033B (zh) * 2016-09-27 2018-05-25 陕西科技大学 一种酶水解结合超声波处理辅助机械解离制备纤维素微纤丝的方法
PL3606500T3 (pl) 2017-04-07 2024-03-18 Weidmann Holding Ag Kompozycja do pielęgnacji ciała
EP3607136A1 (fr) 2017-04-07 2020-02-12 Weidmann Holding AG Procédé de fabrication d'une matière fibreuse à l'échelle micrométrique et/ou à l'échelle nanométrique
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Also Published As

Publication number Publication date
JP5656993B2 (ja) 2015-01-21
SE0950535A1 (sv) 2010-10-12
US20120135506A1 (en) 2012-05-31
EP2452015B1 (fr) 2016-09-07
RU2012103987A (ru) 2013-08-20
EP2452015A4 (fr) 2013-11-20
PL2452015T3 (pl) 2017-03-31
CA2767067C (fr) 2017-02-28
BR112012000144A2 (pt) 2016-03-15
CL2012000039A1 (es) 2012-07-13
AU2010269913B2 (en) 2015-11-26
JP2012533001A (ja) 2012-12-20
KR20120048587A (ko) 2012-05-15
BR112012000144B1 (pt) 2019-08-06
SE533509C2 (sv) 2010-10-12
CA2767067A1 (fr) 2011-01-13
RU2535685C2 (ru) 2014-12-20
CN102472015A (zh) 2012-05-23
AU2010269913A1 (en) 2012-02-09
WO2011004301A1 (fr) 2011-01-13
CN102472015B (zh) 2015-10-21
US8647468B2 (en) 2014-02-11
KR101721275B1 (ko) 2017-03-29
ZA201200328B (en) 2012-09-26

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